Megid....

[Hrith]

Kefka: I have a question about Megid. I never really used it before, but is it that useful? It always misses for me, except on Monests.

Have you tried on Ep2 ?
What level is your Megid ?

Mine is Lv 30 and pwns the shit out Ep2.

Here are monsters that are very weak to it, all monsters taken from Episode II in Ultimate:
Mothvert
Mothvist
El Rappy
Crimson Assassin

Gillchich
Gulgus
Gulgus-gue
Pan Arms (avoid killing it)

Gee
Merillia

Dolmolm
Dolmdarl
Recon
Recobox
Sinow Zoa
Sinow Zele
Morfos

Here are monsters that are moderately weak to it, all monsters taken from Episode II in Ultimate:

Arlan
Merlan
Del-D
Hildelt
Ob Lily

Hidoom
Migium
Baranz
Dubchich

Ul Gibbon
Meriltas
Sinow Berill

Deldepth


As you can see, it pwns Ep2, especially Temple and Seabed.
Bosses and mini-bosses are imune, of course.